i want to replace my stock shift **** (for a standard) with a momo shift ****... only problem is that i can't get the stock one off. i unattached the leather boot and then pushed it up to reveal the cone-shaped nut underneath, i unscrewed it as much as it would go and then pulled on the ****. i've tried it four times already -- if i pull any harder i'll break the whole thing.

any ideas?